余杭污水处理厂DE氧化沟扩容工程实例及分析  

Case Analysis of DE Oxidation Ditch Expansion Project of Yuhang WWTP

作　　者：楼丹 梅竹松 陈潜 楼继锋 George Lu 钱雯婷 吴益辉 LOU Dan;MEI Zhu-song;CHEN Qian;LOU Ji-feng;George Lu;QIAN Wen-ting;WU Yi-hui(Hangzhou Urban and Rural Construction Design Institute Co.Ltd.,Hangzhou 310004,China;Hangzhou Yuhang Water Co.Ltd.,Hangzhou 311100,China;Zhejiang High New Environmental Technology Co.Ltd.y Hangzhou 3111OO,China)

机构地区：[1]杭州市城乡建设设计院股份有限公司,浙江杭州310004 [2]杭州余杭水务控股集团有限公司,浙江杭州311100 [3]浙江海牛环境科技股份有限公司,浙江杭州311100

出　　处：《中国给水排水》2020年第18期102-107,共6页China Water & Wastewater

摘　　要：针对余杭污水处理厂现状,利用数学模型模拟DE氧化沟,通过改进曝气形式、增加水下推进器、精准控制曝气等一系列改造措施,挖潜并优化运行参数,使处理规模从6×10^4m^3/d扩至8×10^4m^3/d,实际控制出水水质达到浙江省地方标准。扩容改造后出水COD均值为17.0mg/L、氨氮均值为0.32 mg/L、总氮均值为8.07 mg/L,其中出水COD和总氮显著降低,稳定性亦优于扩容改造前。扩容改造后吨水电耗与改造前基本持平;吨水甲醇消耗量下降约47.6%,系统综合能耗降低。According to the present situation of Yuhang Wastewater Treatment Plant( WWTP),the DE oxidation ditch was simulated by a mathematical model. Through a series of transformation measures such as improving aeration form,adding underwater thrusters,controlling aeration precisely,exploring potential and optimizing operation parameters,the total treatment capacity of Yuhang WWTP was expanded from 6 × 10^4 m^3/d to 8 × 10^4 m^3/d and the actual effluent quality reached local standard of Zhejiang Province. After expansion,the average effluent concentrations of COD,ammonia nitrogen and total nitrogen were 17. 0 mg/L,0. 32 mg/L and 8. 07 mg/L,respectively. Among them,the effluent concentration of COD and total nitrogen were significantly reduced and the operation stability was also better than before. After expansion reconstruction,the electricity consumption per ton of wastewater was basically the same as before,while the consumption of methanol per ton of wastewater decreased by47. 6%. The comprehensive energy consumption of Yuhang WWTP was decreased after expansion.

关 键 词：DE氧化沟 扩容改造 数学模型 电耗 药耗 

分 类 号：TU992[建筑科学—市政工程]